Mitsubishi Heavy Industries Marine Machinery & Equipment Co. (MHIMME) will supply generator turbines and volatile organic contents (VOC)-firing auxiliary boilers for two 124 000 DWT LNG shuttle tankers.
The ships are being built by Daewoo Shipbuilding & Marine Engineering Co., Ltd. in Korea for Knutsen NYK Offshore Tankers.
Both turbines and boilers are scheduled for delivery to DSME in mid-2021. These vessels will be run between the North Sea and the Barents Sea for transport of crude oil. The purpose of installing turbine and boiler is to use VOC as fuel and reduce hazardous air pollutants discharged from crude oil tanks when crude oil is loaded. VOC is classified in two types, one is liquefied which is treated and generated through VOC recovery device and another is excess VOC which cannot be treated by the device, and VOC firing auxiliary boiler can use both types.
Especially from environmental viewpoint, the benefit of VOC-firing boiler is to detoxify excess VOC which contains 80% or more of inert gases such as nitrogen and carbon dioxide, and it is difficult to be broken out without the boiler.
In addition, generator turbine is also effectively used in the ship as electricity provider and also contributes to reducing environmental impact by improving energy efficiency and reducing carbon dioxide emissions. MHI-MME is only supplier that can supply both marine turbines and boilers with original design and will provide most optimized design products for the new ships.